The production process of precision seamless steel pipe includes cold drawing, hot rolling and thermal expansion. The main processing procedures are blank sawing process, ring furnace heating process, perforation process, rolling process, sizing process, cooling bed process, straightening process, pipe soot blowing process, magnetic flux leakage process, surface inspection and length measurement.

20# cold drawn seamless steel pipe is a common kind of steel products.  The length of exporting 20# cold drawn steel pipe generally can not exceed six meters, which is determined by the size of the container. It is mainly used for some mechanical parts, mechanical structure tubes.

20# hot rolling seamless steel pipe mainly refers to carbon content of the material, about 0.2% or so. This material, compared to other excellent carbon steel, is also common. It is commonly used for manufacturing seamless steel pipe, mould, high quality carbon steel plate, channel steel and other steel.

Though precision seamless steel pipe has good performance, it does not mean that it is powerful. However, seamless steel pipe can not be used under high temperature, humid environment, especially in the bad weather for a long time, which will reduce its lifespan. So in the use of seamless steel pipe, these premises should be paid special attention.